Rename __attribute__((packed)) --> __packed

Also unify __attribute__ ((..)) to __attribute__((..)) and
handle ((__packed__)) like ((packed))

Change-Id: Ie60a51c3fa92b5009724a5b7c2932e361bf3490c
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: https://review.coreboot.org/15921
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/drivers/elog/boot_count.c

@@ -18,6 +18,7 @@
 #include <pc80/mc146818rtc.h>
 #include <stddef.h>
 #include <stdint.h>
+#include <compiler.h>
 #include <elog.h>
 
 /*
@@ -43,7 +44,7 @@ struct boot_count {
 	u16 signature;
 	u32 count;
 	u16 checksum;
-} __attribute__ ((packed));
+} __packed;
 
 /* Read and validate boot count structure from CMOS */
 static int boot_count_cmos_read(struct boot_count *bc)

src/drivers/elog/elog_internal.h

@@ -16,13 +16,14 @@
 #ifndef ELOG_INTERNAL_H_
 #define ELOG_INTERNAL_H_
 
+#include <compiler.h>
 /* ELOG header */
 struct elog_header {
 	u32 magic;
 	u8 version;
 	u8 header_size;
 	u8 reserved[2];
-} __attribute__ ((packed));
+} __packed;
 
 /* ELOG related constants */
 #define ELOG_SIGNATURE			0x474f4c45  /* 'ELOG' */
@@ -40,7 +41,7 @@ struct event_header {
 	u8 hour;
 	u8 minute;
 	u8 second;
-} __attribute__ ((packed));
+} __packed;
 
 /* SMBIOS Type 15 related constants */
 #define ELOG_HEADER_TYPE_OEM		0x88

src/drivers/elog/gsmi.c

@@ -13,6 +13,7 @@
  * GNU General Public License for more details.
  */
 
+#include <compiler.h>
 #include <arch/io.h>
 #include <console/console.h>
 #include <cpu/x86/smm.h>
@@ -33,17 +34,17 @@ struct gsmi_set_eventlog_param {
 	u32 data_ptr;
 	u32 data_len;
 	u32 type;
-} __attribute__ ((packed));
+} __packed;
 
 struct gsmi_set_eventlog_type1 {
 	u16 type;
 	u32 instance;
-} __attribute__ ((packed));
+} __packed;
 
 struct gsmi_clear_eventlog_param {
 	u32 percentage;
 	u32 data_type;
-} __attribute__ ((packed));
+} __packed;
 
 /* Param is usually EBX, ret in EAX */
 u32 gsmi_exec(u8 command, u32 *param)